"Four Panel-Speakers belonging to four different disciplinary/professional fields involved by the perspective of "sustainable development" ( Bruntland Report, 1987; UNCED, 1992) and selected from the followings disciplinary fields : Natural Sciences, Demography, Economics, Psychology, Ecology, Political sciences, Architecture, Urban planning ) will present their point of view on the meaning and use of this term/concept of "sustainable development" - under the theoretical and practical point of view, with related implications -, for their own disciplinary /professional domain/perspective."